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LaF_3:Ce^(3+)纳米晶的制备及荧光性质 被引量:1

The Preparation of LaF_3∶Ce^(3+) Nanocrystals and Fluorescent Properties
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摘要 采用水热法制备了掺杂Ce3+的LaF3的纳米粒子,分别用X射线粉末衍射(XRD)和荧光光谱(PL)对样品的结构和性质进行了表征。XRD的结果表明:LaF3∶Ce3+纳米晶标准卡为JCPDS73-2192,且颗粒平均尺寸为18.7nm,掺入Ce3+杂质后晶格结构没有变化。荧光光谱结果表明:Ce3+呈现其宽带发射,激发峰在245nm处,发射峰在444nm处,随着Ce3+的摩尔浓度比的增加,样品的荧光强度先增大后减小,且Ce3+的掺杂量为4%(摩尔比)时,纳米粒子的荧光强度最强,但更高的掺杂浓度将导致荧光猝灭。 The LaF3 : Ce3+ Nanocrystals were prepared using hydrothermal method, the structure and nature of the samples were characterized by X-ray powder diffraction (XRD) and fluorescence spectra, firstly, the prepared nanoparticles is LaFa : Ce3+ (JCPDS 73-2192), the average size of the particles is 18.7nm and the lattice structure did not change after the incorporation of Ce3+. secondly,the excitation peak is at 245nm and the emission peak is at 444nm. The fluorescent peak is from strong to weak with the increase of Ce3+ concentration,moreover,when the doped Ce3+ is 4 % (molar ratio), the fluorescence intensity of the particles is the strongest, but a higher doping concentration will lead to fluorescent quenching.
出处 《光谱实验室》 CAS 2013年第3期1399-1402,共4页 Chinese Journal of Spectroscopy Laboratory
基金 伊犁师范学院重点学科开放课题(2012ZDXK32)
关键词 水热法 稀土离子 荧光 氟化镧 Hydrothermal Method ~ Rare Earth Ions Fluorescence LaF3
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  • 1Chursanova M V, Dzhagan V M, Yukhymchuk V Oet al. Nanostructured Silver Substrates With Stable and Universal SERS Properties.. Application to Organic Molecules and Semiconductor Nanoparticles [J]. Nanoscale Research Letters, 2010, 5 (2): 403-409.
  • 2Jr. M B, Moronne M, Gin Pet al. Semiconductor Nanocrystals as FIQorescent Biological Labels[J].Science, 1998,281 (5385): 2013-2016.
  • 3Wang L Y, Li Y D. Green Upconversion Nanocrystals for DNA Detection [J]. Chemical Communications, 2006, 14 (24): 2557-2559.
  • 4Zeng J H,Su J,Li Z Het al. Synthesis and Upconversion L of Hexagonal-Phase NaYF4 + Yb3+ , Er3+ Phosphors of Controlled Size and Morphology[J]. Advanced Materials, 2005,17 (17) : 2119-2123.
  • 5Diamente P R,Burke R D,van Veggel F C J M. Bioconjugation of Ln3+-Doped LaF3 Nanopartieles to Avidin[J]. Langmuir, 2006, 22(4) :1782-1788.
  • 6Zhang Y W, Sun X, Si R et al. Single-Crystalline and Monodisperse LaFs Triangular Nanoplates from a Single-Source Preeursor[J]. Journal of The American Chemical Society, 2005,127(10):3260-3261.
  • 7Wang Z L, Quan Z W, Jia P Y eta/. A Facile Synthesis and Photolumineseent Properties of Redispersible CeF3,CeF3:Tb3+, and CeF3 : TbS+/LaFa (Core/Shell) Nanoparticles[J]. Chemistry of Materials, 2006,18(8) : 2030-2037.
  • 8Evanics F ,Diamente P R, van eggel F C J M et al. Water-Soluble GdF3 and GdFJLaF3 Nanoparticles-Physical Characterizationand NMR Relaxation Properties[J]. Chemistry of Materials,2006,18(l0):2499-2505.
  • 9Malandrino G,Benelli C,Castelli F et al. Synthesis, Characterization,Crystal Structure and Mass Transport Properties of Lanthanum fl-Diketonate Glyme Complexes, Volatile Precursors for Metal Organic Chemical Vapor Deposition Applications[J].Chemistry of Materials, 1998,10(11) : 3434-3444.
  • 10Vetrone F, Capobianco J A. Lanthanlde-Doped Fluoride Nanopartlchs: Luminescence, Upconversion, and Biological Applications [J].Nano$echnology, 2008,5(9) : 1306-1339.

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